//适配主流设备的函数
.adapterDevice(@index) when ( @index > 0){
  @media (min-width: extract(@adapterDeviceList,@index)) {
    html{
      font-size:@baseFontSize / @psdWidth * extract(@adapterDeviceList,@index);
    }
  }
  .adapterDevice( @index - 1);
}
